Lay-rock-shaft bearing



A. E. RHOADES.

LAY ROCK SHAFT BEARING. APPucATloN FILED :uu/28.1919.

Patented Dec. 14, 1920.

UNITED STATES4 PATENT i OFFICE.

ALONZO E. RHOADES, OF HOPEDALE, MASSACHUSETTS, ASSIG'NOR T0 DRAPER CORPO- RATION, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

LAYAROCK-SHAFT BEARING.

Specication of Letters Patent. Patented Dec. 14, 1920.

Application led J'uly 28, 1919. Serial No. 313,952.

To all whom t may concern:

Be it known that I, ALONZO E. RHoADEs, a citizen of the United States, and a resident of Hopedale, in the county of Vorcester and State of Massachusetts, have invented an improvement in Lay-Rock-Shaft Bearings, of which the following description, in connection with the accompanying drawings is a specification, like characters on the drawings representing like parts.

This invention relates to looms and more particularly to the rock shaft bearings in looms which support the lay rock shaft.

The lay swords which support the lay are commonly secured to a rock shaft which ex tends from one side of the loom to the other and constitutes the pivotal support for the lay movement. The constant rocking of the lay rock shaft tends to produce wear of the rock shaft in its bearings and, perforce, lost motion, so that the path of the lay, in the course of a short time, assumes a position different from its originally intended path, and its motion is not as uniform and accurate as it should be. Various attempts have been made to produce corrective means to remedy this constant wear of the rock shaft in its bearings, and some of these have worked efiiciently, such, for instance, as that of the datent to Side H. Bevill No. 725,659, dated April 21, 1903.

`Where such corrective means has consisted of adjustable features for lifting the bearings or the rock shaft to compensate for the wear produced, there is liable to be a difference in the adjustment of one end of the shaft from that of the other, due either to carelessness or incompetency of the workmen. On the other hand, it is desirable that the lay should be supported in a substantially accurate horizontal position, and that any correction to compensate for wear and lost motion should not disturb the accuracy of the lay alinement.

One of the objects of the present invention, therefore, is to provide a` lay rock shaft bearing which shall be simple in construction, eiiicient in correcting any wear and lost motion, and wherein the correction may be made without removing thelay rock shaft.

An important feature of the present invention, therefore, consists of a bearing plate having an extended bearing hub, and 55 a bushing which may be slipped over the exposed end of the lay rock shaft into the extended bearing hub where it will be held from rotative orkrocking movement so that any wear exerted by the lay rock shaft, will be imparted to the bushing, which may be readily removed and renewed. y

. The other featuresk and novel construction of parts will be hereinafter described in connection with they above, kand then suchnovel characteristics willV be defined by the claims.

In the drawings: n

Figure 1 is a perspective yview of the lower portion of the 'loom frame at one side thereofand the lay rock shaft, with the present invention associated therewith;

Fig. 2 is an enlarged detached perspective view` showing ythe bearing plate and the bushing in separated relation;

Fig. 3 is a vsectional longitudinal view of the lay rock shaft showing the relation of the bearing plate and bushing when the parts are in assembled relation. f f

The loom frame 1 may be of usual construction and comprise the usual side members having a web 2 provided with an enlarged opening 3, said opening being much larger than` the diameter of the lay rock shaft 4, as indicated in Fig. 1. Secured to the lay rock shaft 4 are the lay swords 5 which may be of usual construction.

Secured to the web 2 of the loom-side frame is the bearing plate 6 having the side or wing portions 7 and 8 provided with openings 9 through which pass thefsecuring bolts 10 by which the bearing plate may be secured to `the side of the loom frame. If

desired, the wing portions 7 and 8 of the bearing plate may have openings 11 through which pins may be passed to further secure the bearing plate to the loom side.

Extended from the side of the bearing plate 6 is the bearing hub 12, preferably extended inwardly toward the centerr of the loom, they bearing plate 6 being preferably secured to the routside of the web 2 and the hub 12 passing through the enlarged opening 3. The bearing hub 12 is preferably rmade of cylindrical exterior form and has an interior cylindrical surface 13.

The outer portion of the bearing plate 6 is provided with a face 14 which is circularlyrecessed, as at 15. This face 14 and recess 15 may be of any desired shape, but itis preferably formed circularly. The face v14 which constitutes a iiange on the exterior or outside surface of the bearing plate 6, is provided with a slot 16 which, as will hereinafter more fully appear, receives a portion of a bushing and serves to prevent rotative or rocking movement of the bushing in the bearing hub, so that the wear produced by the rocking movement of the lay rock shaft, will be imparted to the bushing and not to the bearing hub.

The bushing comprises a portion 17 fitted to the interior of the bearing hub and has a cylindrical inner bearing surface 18 to receive the lay rock shaft 4:. The bushing 17 has a head portion 19 adapted to fit the recessed or face portion 15 of the bearing plate, the construction being such that when the bushing and bearing plate and hub are in associated relation, the hub portion 19 of the bushing fits snugly within the recess 15 of the bearing plate, as indicated in Fig. 3.

Projecting from the head portion 19 of the bushing is a lug 2O shaped to lit the slotted portion 16 of the bearing plate, the construction being such that when the bushing and bearing plate are in assembled relation, as indicated in Fig. 3, the lug 20 serves to prevent rotative or rocking movement of the bushing in the bearing hub.

The bushing 17 has an opening 21, which, when the bushing and bearing plate are in assembled relation, as indicated in Fig. 2, is brought into registration with an opening 22 in the bearing hub, the construction being such that a proper lubricant may be passed through the openings 21 and 22 to lubricate'the lay rock shaft in the bearing portion of the bushing. The lug 2O of the bushing may also be provided with a further opening 23 for the passage of lubricant to the lay rock shaft.

In assembling the parts', the bearing plate 6 is passed through the side frame of the loom with the extended bearing hub pro jecting inwardly toward the center of the loom, and is secured in position by the securing bolts 10. The bushing 17 is then passed over the end of the lay rock shaft with its extended portion fitting the interior of the bearing hub and the head 19 of the bushing seated within the recess 15 of the bearing plate with the lug 20 in the slot 16 of the bearing plate. The shoe 24, which is provided with a hub portion 25, is then slipped over the end of the lay rock shaft, as indi cated in Fig. 1, with its inner surfacebearing against the head 19 of the bushing, and is there secured in place by suitable means, such as the detachable bolt 26. From the construction described it will be at once apparent that by loosening the securing bolt 26, the shoe 24 which may be of usual con` struction, may be removed from the end of the lay rock shaft and the bushing 17 readily pulled outwardly over the end of the shaft. WhenV a fresh bushing is to be placed in the bearing plate, it is slid over the end of the lay rock shaft t into the extended bearing hub into the position already described, and then the shoe 24 is secured on the end of the lay rock shaft. Thus an efficient and readily corrective construction is provided for compensating for wear or lost motion between the lay rock shaft and the bushing, and upon renewal of the bushing at any time, the lay rock shaft is maintained in its original alined position and the lay itself is not disturbed in the path of its movement.

Claims:

1. In a loom, the combination of the side frame provided with an enlarged opening, a bearing plate having an integrally formed elongated hub portion extending from one face thereof through the enlarged opening in the loom side frame and laterally projecting wing portions integral therewith and overlapping the loom frame at each side of the enlarged opening, bolts for securing the wing portions t0 the outside of the looin frame, a flange extending outwardly from the bearing plate at the side opposite the hub having a slot extended radially therethrough and provided with a circular recess, a bushing which has an extended portion to fit the interior of the elongated hub of the bearing plate, an enlarged head portion formed at one end of the bushing to fit the said circular recess with the exterior faces of the head and the iiange in the same vertical plane, a projection extending from the enlarged head of the bushing fitting the slot in the outwardly extended iiange at the bearing plate, the lay rock shaft extended through the bushing beyond the exterior faces of the head and flange, a shoe having a hub portion to bear against the faces of the head and flange, and means for detachably securing the shoe to the projecting end portion of the lay rocl shaft.

2. In a loom, the combination of the lay rock shaft, a bearing plate secured to the exterior of the loom side and having a bearing hub extending through and to the inside of the loom side, wing portions formed on said bearing plate and having a projecting flange provided with an annular recess and a slot extending radially of the flange, a bushing litting the interior of the bearing hub and having an enlarged head fitting within the annular recess in the projecting flange of the bearing plate, a lug extended radially from the enlarged head and fitting the radial slot in the fiange of the bearing plate, a shoe detachably secured to the end of the lay rock shaft extended through the bushing and holding the bushing and bearing plate in their assembled relation.

In testimony whereof I have signed my name to this specification.

ALONZO E. RHOADES. 

